The hands-free including Bluetooth dongle and V4.0 Bluetooth earpiece. V4.0 is a earpiece which built in PTT microphone that can be placed over either ear.
The earpiece provides the best audio quality when paired with HB-6B connector two way radios and is comfortable and flexible enough for all-day wear. Do not hesitate to Work with it to get free of your hands in work.
Bluetooth Version: V4.0 Class 2
Frequency Range: 2.4G
Working Mode: HFP1.5 A2DP AVRCP
Charger time: 1-2.5H
Talk Range: <10Meters
Work Time: 5-8Hours
Standby Time: <100Hours
Connector: K1 Standard
K interface for models: Almost All The brand two way radio of China.